For several years, we have followed the Planetary Society‘s efforts to launch a solar sail that would be propelled by the light radiating from the Sun. In July 2019, the society’s LightSail 2 deployed a 32-square-meter solar sail, about the size of a boxing ring, in Earth orbit. Now 30 months later, LightSail 2 continues to sail on sunbeams.
LightSail 2 is the first spacecraft in Earth orbit to be propelled only by sunlight. The craft orbits the earth powered by the momentum of solar photons striking the sail.
Following pressure from the United States, 
A number of small Pacific island nations, including Tuvalu, Kiribati and the Marshal Islands, are facing an existential threat from rising sea levels. According to the 
Millions of 
The maxi-trimaran Sails of Change (ex-
Recently, the 
Great news! David O’Neill, director of the 
On late Thursday, November 18, and early Friday, November 19, those watching the sky over much of the globe will see the longest partial lunar eclipse in almost 600 years. The eclipse will last for nearly 3 and a half hours and will be very near to, but not quite, a full lunar eclipse.
The 
We recently posted about how the US Navy’s 
My wife and I took an incredible trip to the Galapagos in 2017. An updated repost. We spent a week on 
The Chinese military has built targets in the shape of an American aircraft carrier and other U.S. warships in the Taklamakan desert as part of a new target range complex, according to photos from satellite imagery company Maxar.
On Saturday, we posted about the 
What could be more gloriously incongruous than sailing on a replica 9th-century Viking longship and sipping whisky on a blustery Autumn day in New York harbor? Here is an updated repost: 
The 
The 
The worst way to determine the position of a previously uncharted seamount is to run into it underwater. That is apparently what happened to the